CN220472717U - Built-in double-layer gas ultrasonic flowmeter rectifier - Google Patents

Abstract

The utility model relates to a built-in double-layer gas ultrasonic flowmeter rectifier, which comprises a guide cylinder, a first rectifying plate and a second rectifying plate, wherein the first rectifying plate and the second rectifying plate are assembled on the inner sides of two ends of the guide cylinder; a first circular groove and a second circular groove are formed in the guide cylinder; the first rectifying plate is arranged in the first circular groove through interference fit; the second rectifying plate is arranged in the second circular groove through interference fit; according to the built-in double-layer gas ultrasonic flowmeter rectifier, after fluid in an ultrasonic flowmeter pipeline is rectified by the rectifier, pulsating flow energy existing in the fluid passing through the bent pipe is completely dispersed, so that the fluid is transited from a turbulent flow state to a laminar flow state, and the influence of pulsating flow is eliminated; thereby effectively improving the detection effect of the ultrasonic flowmeter on the fluid; the design makes production assembly more convenient, reduces production loss reporting rate, improves process flexibility and improves production efficiency.

Description

A built-in double-layer gas ultrasonic flow meter rectifier

Technical field

The utility model belongs to the technical field of gas flow control, and specifically relates to a built-in double-layer gas ultrasonic flow meter rectifier.

Background technique

With the rapid development of ultrasonic flowmeter technology, ultrasonic flowmeters have been widely used in the measurement of natural gas, petroleum gas, coal gas and other gases. When the ultrasonic flowmeter is in working condition, it is necessary to ensure that the flow pattern of the gas entering the flowmeter is symmetrical and has a fully developed turbulent velocity distribution. However, in actual use, due to the interference of pipe elbows and valves in the metering pipeline, The influence of the velocity distribution of the gas will cause the fluid to flow turbulently and irregularly in the pipeline, thus affecting the measurement accuracy.

In order to solve the above technical problems, the applicant disclosed the application number: 202222383635.7, which is called a new type of built-in gas ultrasonic flow meter rectifier, including a guide tube and a rectifier plate; a circular groove is provided in the guide tube, and the rectifier The plate is installed in the circular groove through interference fit so that its end faces are flush; with the built-in gas ultrasonic flow meter rectifier of the present invention, after the fluid in the ultrasonic flow meter pipe is rectified by the rectifier, the pulsating flow energy present in the fluid Being completely dispersed, the fluid transitions from a turbulent flow state to a laminar flow state, eliminating the influence of pulsating flow; thereby effectively improving the detection effect of the ultrasonic flow meter on fluids. This design makes production and assembly more convenient, reduces the production loss rate, improves process flexibility, and improves production efficiency; however, there will still be the influence of pulsating flow, causing fluid disorder in the pipeline and affecting the detection effect.

In view of the above technical problems, improvements need to be made.

Utility model content

The utility model aims to overcome the above-mentioned defects in the prior art and provide a built-in double-layer gas ultrasonic flow meter rectifier with a simple and reasonable structure, ingenious design, convenience and practicality.

In order to achieve the above purpose, the technical solution adopted by this utility model is: a built-in double-layer gas ultrasonic flow meter rectifier, which includes a flow guide tube, a first rectifier plate and a second rectifier plate assembled on the inner sides of both ends of the guide tube. ; A first circular groove and a second circular groove are provided in the guide tube; the first rectifying plate is installed in the first circular groove through interference fit; the second rectifying plate is installed in the third circular groove through interference fit. Two circular grooves.

As a preferred mode of the present invention, a transition section is formed in the guide tube, and the transition section is located between the first rectifying plate and the second rectifying plate.

As a preferred mode of the present invention, the first rectifying plate is provided with a plurality of first rectifying holes in a regular hexagonal shape, adjacent first rectifying holes are fitted to each other, and the first rectifying holes are connected to the transition section. Pass.

As a preferred mode of the present invention, the second rectifying plate is provided with a plurality of regular hexagonal second rectifying holes. Adjacent second rectifying holes are fitted to each other, and the second rectifying holes are connected to the transition section. Pass.

As a preferred mode of the present invention, the diameters of the first rectifying holes and the second rectifying holes are 3.2 mm to 4.8 mm.

As a preferred mode of the present invention, the thickness of the first rectifying plate and the second rectifying plate is 15 mm to 35 mm.

As a preferred mode of the present invention, the end surfaces of the first rectifying plate and the second rectifying plate are on the same horizontal plane as the end surface of the guide tube.

As a preferred mode of the present invention, the flange on the flow guide tube coincides with the flange plane of the air inlet of the flow meter, and the positioning hole of the flow guide tube is fixed with screws.

As a preferred mode of the present invention, the flow guide tube is made of stainless steel.

As a preferred mode of the present invention, the first rectifying plate and the second rectifying plate are made of stainless steel.

The beneficial effects of this utility model are:

This utility model has a built-in double-layer gas ultrasonic flow meter rectifier. After the fluid in the ultrasonic flow meter pipe is rectified by the rectifier, the pulsating flow energy existing in the fluid passing through the elbow is completely dispersed, making the fluid transition from a turbulent flow state. to the laminar flow state, eliminating the influence of pulsating flow; thereby effectively improving the detection effect of the ultrasonic flowmeter on fluids; this design makes production and assembly more convenient, reduces production loss rates, improves process flexibility, and improves production efficiency.

Description of drawings

Figure 1 is a perspective view of the structure of an embodiment of the present utility model;

Figure 2 is a plan view of an embodiment of the present utility model;

Figure 3 is a cross-sectional view of an embodiment of the present utility model;

Figure 4 is a three-dimensional view of the flow guide tube according to the embodiment of the present invention.

Reference numbers in the figure: guide tube 1, guide tube positioning hole 1-A, first circular groove 1-B, second circular groove 1-C, flange 1-D, transition section 1- E, the first rectifying plate 2, the first rectifying hole 2-A, the second rectifying plate 3, and the second rectifying hole 3-A.

Detailed ways

The embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

Example:

As shown in Figure 1-4, a built-in double-layer gas ultrasonic flowmeter rectifier includes a guide tube 1, a first rectifier plate 2 and a second rectifier plate 3 assembled inside both ends of the guide tube 1; The barrel 1 is provided with a first circular groove 1-B and a second circular groove 1-C; the first rectifying plate 2 is installed in the first circular groove 1-B through interference fit; the second rectifying plate 2 is installed in the first circular groove 1-B through interference fit; The plate 3 is installed in the second circular groove 1-C through interference fit; the end surfaces of the first rectifying plate 2 and the second rectifying plate 3 are at the same level as the end surface of the guide tube 1; forming a complete ultrasonic flowmeter Rectification structure; the ultrasonic flowmeter rectification structure of the present utility model is provided with a first rectification plate 2 and a second rectification plate 3. The first rectification plate 2 and the second rectification plate 3 are respectively installed on the inner sides of both ends of the guide tube 1. After rectification by the rectifier, the pulsating flow energy existing in the fluid is completely dispersed, causing the fluid to transition from a turbulent flow state to a laminar flow state, eliminating the influence of the pulsating flow; thereby improving the measurement accuracy; thus effectively improving the accuracy of the ultrasonic flow meter. Fluid detection effect; this design makes production and assembly more convenient, reduces production loss rates, improves process flexibility, and improves production efficiency.

A transition section 1-E is formed in the guide tube 1. The transition section 1-E is located between the first rectifying plate 2 and the second rectifying plate 3. The first rectifying plate 2 is provided with a plurality of regular hexagonal first rectifying plates. Hole 2-A, adjacent first rectifying holes 2-A are fit to each other.

The first rectifying hole 2-A is connected with the transition section 1-E. A plurality of regular hexagonal first rectifying holes 2-A form a honeycomb structure. The second rectifying plate 3 is provided with a plurality of regular hexagonal second rectifying holes. The rectifying holes 3-A and the adjacent second rectifying holes 3-A are connected to each other. The second rectifying holes 3-A are connected with the transition section 1-E. A plurality of regular hexagonal second rectifying holes 3-A Form a honeycomb structure.

The diameter of the first rectifying hole 2-A and the second rectifying hole 3-A is 3.2㎜～4.8㎜. In this embodiment, the diameter of the first rectifying hole 2-A and the second rectifying hole 3-A is 3.5㎜. The thickness of the first rectifying plate 2 and the second rectifying plate 3 is 15 mm to 35 mm; in this embodiment, the thickness of the first rectifying plate 2 and the second rectifying plate 3 is 20 mm.

The airflow in the pipeline first undergoes the first step of rectification through the plurality of first rectification holes 2-A on the first rectification plate 2. After the initial rectification, a non-uniform airflow is released. The airflow undergoes a buffer transition after passing through the transition section 1-E. , finally the airflow passes through the plurality of second rectifying holes 3-A on the second rectifying plate 3 to obtain a relatively more evenly distributed airflow to facilitate subsequent measurement, which is more conducive to the effective propagation of ultrasonic waves, thereby improving measurement accuracy.

After the built-in double-layer gas ultrasonic flowmeter rectifier of the present invention is assembled into the flowmeter channel, the flange 1-D on the flow guide tube 1 coincides with the flow meter air inlet flange plane, and through the guide tube 1 The flow tube positioning hole 1-A is fixed with screws.

Among them, the guide tube 1 is made of stainless steel and has anti-corrosion effect.

The first rectifying plate 2 and the second rectifying plate 3 are made of stainless steel and have anti-corrosion effect.

The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention; various modifications to these embodiments will be obvious to those skilled in the art, and the terms defined herein are The general principles may be implemented in other embodiments without departing from the spirit or scope of the invention; therefore, the invention will not be limited to the embodiments shown herein but will be consistent with the teachings herein. The disclosed principles and novel features are consistent with the broadest scope.

Although this article uses the reference numbers in the figure frequently: guide tube 1, guide tube positioning hole 1-A, first circular groove 1-B, second circular groove 1-C, flange 1 -D, transition section 1-E, first rectifying plate 2, first rectifying hole 2-A, second rectifying plate 3, second rectifying hole 3-A and other terms, but the possibility of using other terms is not excluded; The use of these terms is only for the purpose of describing and explaining the essence of the present invention more conveniently; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims (10)

1. A built-in double-layer gas ultrasonic flow meter rectifier, characterized by: including a guide tube (1), a first rectifier plate (2) and a second rectifier plate assembled inside both ends of the guide tube (1) (3); The first circular groove (1-B) and the second circular groove (1-C) are provided in the guide tube (1); the first rectifying plate (2) is installed on the guide tube (1) through interference fit. In the first circular groove (1-B); the second rectifying plate (3) is installed in the second circular groove (1-C) through interference fit. 2. A built-in double-layer gas ultrasonic flow meter rectifier according to claim 1, characterized in that: a transition section (1-E) is formed in the flow guide tube (1), and the transition section (1-E) ) is located between the first rectifying plate (2) and the second rectifying plate (3). 3. A built-in double-layer gas ultrasonic flow meter rectifier according to claim 2, characterized in that: the first rectifying plate (2) is provided with a plurality of regular hexagonal first rectifying holes (2- A), adjacent first rectifying holes (2-A) are attached to each other, and the first rectifying holes (2-A) are connected with the transition section (1-E). 4. A built-in double-layer gas ultrasonic flow meter rectifier according to claim 2, characterized in that: the second rectifying plate (3) is provided with a plurality of regular hexagonal second rectifying holes (3- A), adjacent second rectifying holes (3-A) fit together, and the second rectifying holes (3-A) are connected with the transition section (1-E). 5. A built-in double-layer gas ultrasonic flow meter rectifier according to claim 3, characterized in that: the aperture of the first rectification hole (2-A) and the second rectification hole (3-A) is 3.2 ㎜～4.8㎜. 6. A built-in double-layer gas ultrasonic flow meter rectifier according to claim 1, characterized in that: the thickness of the first rectifier plate (2) and the second rectifier plate (3) is 15mm~35mm. . 7. A built-in double-layer gas ultrasonic flow meter rectifier according to claim 1, characterized in that: the end surfaces of the first rectifier plate (2) and the second rectifier plate (3) are in contact with the guide tube (1 ) are on the same horizontal plane. 8. A built-in double-layer gas ultrasonic flow meter rectifier according to claim 1, characterized in that: the flange (1-D) on the flow guide tube (1) and the flow meter air inlet flange The planes coincide with each other and are fixed with screws through the guide tube positioning hole (1-A) of the guide tube (1). 9. A built-in double-layer gas ultrasonic flowmeter rectifier according to claim 8, characterized in that: the flow guide tube (1) is made of stainless steel. 10. A built-in double-layer gas ultrasonic flowmeter rectifier according to claim 1, characterized in that: the first rectifying plate (2) and the second rectifying plate (3) are made of stainless steel.